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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (c) 2016-2017 Daniel Ennis (Aikar) - MIT License<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> *  Permission is hereby granted, free of charge, to any person obtaining<a name="line.4"></a>
<span class="sourceLineNo">005</span> *  a copy of this software and associated documentation files (the<a name="line.5"></a>
<span class="sourceLineNo">006</span> *  "Software"), to deal in the Software without restriction, including<a name="line.6"></a>
<span class="sourceLineNo">007</span> *  without limitation the rights to use, copy, modify, merge, publish,<a name="line.7"></a>
<span class="sourceLineNo">008</span> *  distribute, sublicense, and/or sell copies of the Software, and to<a name="line.8"></a>
<span class="sourceLineNo">009</span> *  permit persons to whom the Software is furnished to do so, subject to<a name="line.9"></a>
<span class="sourceLineNo">010</span> *  the following conditions:<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> *  The above copyright notice and this permission notice shall be<a name="line.12"></a>
<span class="sourceLineNo">013</span> *  included in all copies or substantial portions of the Software.<a name="line.13"></a>
<span class="sourceLineNo">014</span> *<a name="line.14"></a>
<span class="sourceLineNo">015</span> *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,<a name="line.15"></a>
<span class="sourceLineNo">016</span> *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF<a name="line.16"></a>
<span class="sourceLineNo">017</span> *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND<a name="line.17"></a>
<span class="sourceLineNo">018</span> *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE<a name="line.18"></a>
<span class="sourceLineNo">019</span> *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION<a name="line.19"></a>
<span class="sourceLineNo">020</span> *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION<a name="line.20"></a>
<span class="sourceLineNo">021</span> *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.<a name="line.21"></a>
<span class="sourceLineNo">022</span> */<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>/*<a name="line.24"></a>
<span class="sourceLineNo">025</span> * TaskChain for Minecraft Plugins<a name="line.25"></a>
<span class="sourceLineNo">026</span> *<a name="line.26"></a>
<span class="sourceLineNo">027</span> * Written by Aikar &lt;aikar@aikar.co&gt;<a name="line.27"></a>
<span class="sourceLineNo">028</span> * https://aikar.co<a name="line.28"></a>
<span class="sourceLineNo">029</span> * https://starlis.com<a name="line.29"></a>
<span class="sourceLineNo">030</span> *<a name="line.30"></a>
<span class="sourceLineNo">031</span> * @license MIT<a name="line.31"></a>
<span class="sourceLineNo">032</span> */<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>package co.aikar.taskchain;<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span>import co.aikar.taskchain.TaskChainTasks.*;<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>import java.util.ArrayList;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import java.util.Collections;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import java.util.HashMap;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import java.util.List;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import java.util.Map;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import java.util.Objects;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import java.util.concurrent.CompletableFuture;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import java.util.concurrent.ConcurrentLinkedQueue;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import java.util.concurrent.TimeUnit;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import java.util.function.BiConsumer;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import java.util.function.Consumer;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import java.util.function.Predicate;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import java.util.stream.Collectors;<a name="line.50"></a>
<span class="sourceLineNo">051</span><a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>/**<a name="line.53"></a>
<span class="sourceLineNo">054</span> * The Main API class of TaskChain. TaskChain's are created by a {@link TaskChainFactory}<a name="line.54"></a>
<span class="sourceLineNo">055</span> */<a name="line.55"></a>
<span class="sourceLineNo">056</span>@SuppressWarnings({"unused", "FieldAccessedSynchronizedAndUnsynchronized"})<a name="line.56"></a>
<span class="sourceLineNo">057</span>public class TaskChain &lt;T&gt; {<a name="line.57"></a>
<span class="sourceLineNo">058</span>    private static final ThreadLocal&lt;TaskChain&lt;?&gt;&gt; currentChain = new ThreadLocal&lt;&gt;();<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span>    private final GameInterface impl;<a name="line.60"></a>
<span class="sourceLineNo">061</span>    private final TaskChainFactory factory;<a name="line.61"></a>
<span class="sourceLineNo">062</span>    private final Map&lt;String, Object&gt; taskMap = new HashMap&lt;&gt;(0);<a name="line.62"></a>
<span class="sourceLineNo">063</span>    private final ConcurrentLinkedQueue&lt;TaskHolder&lt;?,?&gt;&gt; chainQueue = new ConcurrentLinkedQueue&lt;&gt;();<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>    private int currentActionIndex = 0;<a name="line.65"></a>
<span class="sourceLineNo">066</span>    private int actionIndex = 0;<a name="line.66"></a>
<span class="sourceLineNo">067</span>    private boolean executed = false;<a name="line.67"></a>
<span class="sourceLineNo">068</span>    private boolean async = false;<a name="line.68"></a>
<span class="sourceLineNo">069</span>    private boolean done = false;<a name="line.69"></a>
<span class="sourceLineNo">070</span><a name="line.70"></a>
<span class="sourceLineNo">071</span>    private Object previous;<a name="line.71"></a>
<span class="sourceLineNo">072</span>    private TaskHolder&lt;?, ?&gt; currentHolder;<a name="line.72"></a>
<span class="sourceLineNo">073</span>    private Consumer&lt;Boolean&gt; doneCallback;<a name="line.73"></a>
<span class="sourceLineNo">074</span>    private BiConsumer&lt;Exception, Task&lt;?, ?&gt;&gt; errorHandler;<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span>    /* ======================================================================================== */<a name="line.76"></a>
<span class="sourceLineNo">077</span>    TaskChain(TaskChainFactory factory) {<a name="line.77"></a>
<span class="sourceLineNo">078</span>        this.factory = factory;<a name="line.78"></a>
<span class="sourceLineNo">079</span>        this.impl = factory.getImplementation();<a name="line.79"></a>
<span class="sourceLineNo">080</span>    }<a name="line.80"></a>
<span class="sourceLineNo">081</span>    /* ======================================================================================== */<a name="line.81"></a>
<span class="sourceLineNo">082</span>    // &lt;editor-fold desc="// API Methods - Getters &amp; Setters"&gt;<a name="line.82"></a>
<span class="sourceLineNo">083</span>    /**<a name="line.83"></a>
<span class="sourceLineNo">084</span>     * Called in an executing task, get the current action index.<a name="line.84"></a>
<span class="sourceLineNo">085</span>     * For every action that adds a task to the chain, the action index is increased.<a name="line.85"></a>
<span class="sourceLineNo">086</span>     *<a name="line.86"></a>
<span class="sourceLineNo">087</span>     * Useful in error or done handlers to know where you are in the chain when it aborted or threw exception.<a name="line.87"></a>
<span class="sourceLineNo">088</span>     * @return The current index<a name="line.88"></a>
<span class="sourceLineNo">089</span>     */<a name="line.89"></a>
<span class="sourceLineNo">090</span>    public int getCurrentActionIndex() {<a name="line.90"></a>
<span class="sourceLineNo">091</span>        return currentActionIndex;<a name="line.91"></a>
<span class="sourceLineNo">092</span>    }<a name="line.92"></a>
<span class="sourceLineNo">093</span><a name="line.93"></a>
<span class="sourceLineNo">094</span>    /**<a name="line.94"></a>
<span class="sourceLineNo">095</span>     * Changes the done callback handler for this chain<a name="line.95"></a>
<span class="sourceLineNo">096</span>     * @param doneCallback The handler<a name="line.96"></a>
<span class="sourceLineNo">097</span>     */<a name="line.97"></a>
<span class="sourceLineNo">098</span>    @SuppressWarnings("WeakerAccess")<a name="line.98"></a>
<span class="sourceLineNo">099</span>    public void setDoneCallback(Consumer&lt;Boolean&gt; doneCallback) {<a name="line.99"></a>
<span class="sourceLineNo">100</span>        this.doneCallback = doneCallback;<a name="line.100"></a>
<span class="sourceLineNo">101</span>    }<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span>    /**<a name="line.103"></a>
<span class="sourceLineNo">104</span>     * @return The current error handler or null<a name="line.104"></a>
<span class="sourceLineNo">105</span>     */<a name="line.105"></a>
<span class="sourceLineNo">106</span>    public BiConsumer&lt;Exception, Task&lt;?, ?&gt;&gt; getErrorHandler() {<a name="line.106"></a>
<span class="sourceLineNo">107</span>        return errorHandler;<a name="line.107"></a>
<span class="sourceLineNo">108</span>    }<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span>    /**<a name="line.110"></a>
<span class="sourceLineNo">111</span>     * Changes the error handler for this chain<a name="line.111"></a>
<span class="sourceLineNo">112</span>     * @param errorHandler The error handler<a name="line.112"></a>
<span class="sourceLineNo">113</span>     */<a name="line.113"></a>
<span class="sourceLineNo">114</span>    @SuppressWarnings("WeakerAccess")<a name="line.114"></a>
<span class="sourceLineNo">115</span>    public void setErrorHandler(BiConsumer&lt;Exception, Task&lt;?, ?&gt;&gt; errorHandler) {<a name="line.115"></a>
<span class="sourceLineNo">116</span>        this.errorHandler = errorHandler;<a name="line.116"></a>
<span class="sourceLineNo">117</span>    }<a name="line.117"></a>
<span class="sourceLineNo">118</span>    // &lt;/editor-fold&gt;<a name="line.118"></a>
<span class="sourceLineNo">119</span>    /* ======================================================================================== */<a name="line.119"></a>
<span class="sourceLineNo">120</span>    // &lt;editor-fold desc="// API Methods - Data Wrappers"&gt;<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span>    /**<a name="line.122"></a>
<span class="sourceLineNo">123</span>     * Creates a data wrapper to return multiple objects from a task<a name="line.123"></a>
<span class="sourceLineNo">124</span>     */<a name="line.124"></a>
<span class="sourceLineNo">125</span>    public static &lt;D1, D2&gt; TaskChainDataWrappers.Data2&lt;D1, D2&gt; multi(D1 var1, D2 var2) {<a name="line.125"></a>
<span class="sourceLineNo">126</span>        return new TaskChainDataWrappers.Data2&lt;&gt;(var1, var2);<a name="line.126"></a>
<span class="sourceLineNo">127</span>    }<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
<span class="sourceLineNo">129</span>    /**<a name="line.129"></a>
<span class="sourceLineNo">130</span>     * Creates a data wrapper to return multiple objects from a task<a name="line.130"></a>
<span class="sourceLineNo">131</span>     */<a name="line.131"></a>
<span class="sourceLineNo">132</span>    public static &lt;D1, D2, D3&gt; TaskChainDataWrappers.Data3&lt;D1, D2, D3&gt; multi(D1 var1, D2 var2, D3 var3) {<a name="line.132"></a>
<span class="sourceLineNo">133</span>        return new TaskChainDataWrappers.Data3&lt;&gt;(var1, var2, var3);<a name="line.133"></a>
<span class="sourceLineNo">134</span>    }<a name="line.134"></a>
<span class="sourceLineNo">135</span><a name="line.135"></a>
<span class="sourceLineNo">136</span>    /**<a name="line.136"></a>
<span class="sourceLineNo">137</span>     * Creates a data wrapper to return multiple objects from a task<a name="line.137"></a>
<span class="sourceLineNo">138</span>     */<a name="line.138"></a>
<span class="sourceLineNo">139</span>    public static &lt;D1, D2, D3, D4&gt; TaskChainDataWrappers.Data4&lt;D1, D2, D3, D4&gt; multi(D1 var1, D2 var2, D3 var3, D4 var4) {<a name="line.139"></a>
<span class="sourceLineNo">140</span>        return new TaskChainDataWrappers.Data4&lt;&gt;(var1, var2, var3, var4);<a name="line.140"></a>
<span class="sourceLineNo">141</span>    }<a name="line.141"></a>
<span class="sourceLineNo">142</span><a name="line.142"></a>
<span class="sourceLineNo">143</span>    /**<a name="line.143"></a>
<span class="sourceLineNo">144</span>     * Creates a data wrapper to return multiple objects from a task<a name="line.144"></a>
<span class="sourceLineNo">145</span>     */<a name="line.145"></a>
<span class="sourceLineNo">146</span>    public static &lt;D1, D2, D3, D4, D5&gt; TaskChainDataWrappers.Data5&lt;D1, D2, D3, D4, D5&gt; multi(D1 var1, D2 var2, D3 var3, D4 var4, D5 var5) {<a name="line.146"></a>
<span class="sourceLineNo">147</span>        return new TaskChainDataWrappers.Data5&lt;&gt;(var1, var2, var3, var4, var5);<a name="line.147"></a>
<span class="sourceLineNo">148</span>    }<a name="line.148"></a>
<span class="sourceLineNo">149</span><a name="line.149"></a>
<span class="sourceLineNo">150</span>    /**<a name="line.150"></a>
<span class="sourceLineNo">151</span>     * Creates a data wrapper to return multiple objects from a task<a name="line.151"></a>
<span class="sourceLineNo">152</span>     */<a name="line.152"></a>
<span class="sourceLineNo">153</span>    public static &lt;D1, D2, D3, D4, D5, D6&gt; TaskChainDataWrappers.Data6&lt;D1, D2, D3, D4, D5, D6&gt; multi(D1 var1, D2 var2, D3 var3, D4 var4, D5 var5, D6 var6) {<a name="line.153"></a>
<span class="sourceLineNo">154</span>        return new TaskChainDataWrappers.Data6&lt;&gt;(var1, var2, var3, var4, var5, var6);<a name="line.154"></a>
<span class="sourceLineNo">155</span>    }<a name="line.155"></a>
<span class="sourceLineNo">156</span>    // &lt;/editor-fold&gt;<a name="line.156"></a>
<span class="sourceLineNo">157</span>    /* ======================================================================================== */<a name="line.157"></a>
<span class="sourceLineNo">158</span><a name="line.158"></a>
<span class="sourceLineNo">159</span>    // &lt;editor-fold desc="// API Methods - Base"&gt;<a name="line.159"></a>
<span class="sourceLineNo">160</span>    /**<a name="line.160"></a>
<span class="sourceLineNo">161</span>     * Call to abort execution of the chain. Should be called inside of an executing task.<a name="line.161"></a>
<span class="sourceLineNo">162</span>     */<a name="line.162"></a>
<span class="sourceLineNo">163</span>    @SuppressWarnings("WeakerAccess")<a name="line.163"></a>
<span class="sourceLineNo">164</span>    public static void abort() {<a name="line.164"></a>
<span class="sourceLineNo">165</span>        TaskChainUtil.sneakyThrows(new AbortChainException());<a name="line.165"></a>
<span class="sourceLineNo">166</span>    }<a name="line.166"></a>
<span class="sourceLineNo">167</span><a name="line.167"></a>
<span class="sourceLineNo">168</span>    /**<a name="line.168"></a>
<span class="sourceLineNo">169</span>     * Usable only inside of an executing Task or Chain Error/Done handlers<a name="line.169"></a>
<span class="sourceLineNo">170</span>     *<a name="line.170"></a>
<span class="sourceLineNo">171</span>     * Gets the current chain that is executing this Task or Error/Done handler<a name="line.171"></a>
<span class="sourceLineNo">172</span>     * This method should only be called on the same thread that is executing the method.<a name="line.172"></a>
<span class="sourceLineNo">173</span>     *<a name="line.173"></a>
<span class="sourceLineNo">174</span>     * In an AsyncExecutingTask or a FutureTask, You must call this method BEFORE passing control to another thread.<a name="line.174"></a>
<span class="sourceLineNo">175</span>     */<a name="line.175"></a>
<span class="sourceLineNo">176</span>    @SuppressWarnings("WeakerAccess")<a name="line.176"></a>
<span class="sourceLineNo">177</span>    public static TaskChain&lt;?&gt; getCurrentChain() {<a name="line.177"></a>
<span class="sourceLineNo">178</span>        return currentChain.get();<a name="line.178"></a>
<span class="sourceLineNo">179</span>    }<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
<span class="sourceLineNo">181</span>    /* ======================================================================================== */<a name="line.181"></a>
<span class="sourceLineNo">182</span><a name="line.182"></a>
<span class="sourceLineNo">183</span>    /**<a name="line.183"></a>
<span class="sourceLineNo">184</span>     * Allows you to call a callback to insert tasks into the chain without having to break the fluent interface<a name="line.184"></a>
<span class="sourceLineNo">185</span>     *<a name="line.185"></a>
<span class="sourceLineNo">186</span>     * Example: Plugin.newChain().sync(some::task).configure(chain -&gt; {<a name="line.186"></a>
<span class="sourceLineNo">187</span>     *     chain.async(some::foo);<a name="line.187"></a>
<span class="sourceLineNo">188</span>     *     chain.sync(other::bar);<a name="line.188"></a>
<span class="sourceLineNo">189</span>     * }).async(other::task).execute();<a name="line.189"></a>
<span class="sourceLineNo">190</span>     *<a name="line.190"></a>
<span class="sourceLineNo">191</span>     * @param configure Instance of the current chain.<a name="line.191"></a>
<span class="sourceLineNo">192</span>     * @return The same chain<a name="line.192"></a>
<span class="sourceLineNo">193</span>     */<a name="line.193"></a>
<span class="sourceLineNo">194</span>    public TaskChain&lt;T&gt; configure(Consumer&lt;TaskChain&lt;T&gt;&gt; configure) {<a name="line.194"></a>
<span class="sourceLineNo">195</span>        configure.accept(this);<a name="line.195"></a>
<span class="sourceLineNo">196</span>        return this;<a name="line.196"></a>
<span class="sourceLineNo">197</span>    }<a name="line.197"></a>
<span class="sourceLineNo">198</span><a name="line.198"></a>
<span class="sourceLineNo">199</span>    /**<a name="line.199"></a>
<span class="sourceLineNo">200</span>     * Checks if the chain has a value saved for the specified key.<a name="line.200"></a>
<span class="sourceLineNo">201</span>     * @param key Key to check if Task Data has a value for<a name="line.201"></a>
<span class="sourceLineNo">202</span>     */<a name="line.202"></a>
<span class="sourceLineNo">203</span>    @SuppressWarnings("WeakerAccess")<a name="line.203"></a>
<span class="sourceLineNo">204</span>    public boolean hasTaskData(String key) {<a name="line.204"></a>
<span class="sourceLineNo">205</span>        return taskMap.containsKey(key);<a name="line.205"></a>
<span class="sourceLineNo">206</span>    }<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span>    /**<a name="line.208"></a>
<span class="sourceLineNo">209</span>     * Retrieves a value relating to a specific key, saved by a previous task.<a name="line.209"></a>
<span class="sourceLineNo">210</span>     *<a name="line.210"></a>
<span class="sourceLineNo">211</span>     * @param key Key to look up Task Data for<a name="line.211"></a>
<span class="sourceLineNo">212</span>     * @param &lt;R&gt; Type the Task Data value is expected to be<a name="line.212"></a>
<span class="sourceLineNo">213</span>     */<a name="line.213"></a>
<span class="sourceLineNo">214</span>    @SuppressWarnings("WeakerAccess")<a name="line.214"></a>
<span class="sourceLineNo">215</span>    public &lt;R&gt; R getTaskData(String key) {<a name="line.215"></a>
<span class="sourceLineNo">216</span>        //noinspection unchecked<a name="line.216"></a>
<span class="sourceLineNo">217</span>        return (R) taskMap.get(key);<a name="line.217"></a>
<span class="sourceLineNo">218</span>    }<a name="line.218"></a>
<span class="sourceLineNo">219</span><a name="line.219"></a>
<span class="sourceLineNo">220</span>    /**<a name="line.220"></a>
<span class="sourceLineNo">221</span>     * Saves a value for this chain so that a task furthur up the chain can access it.<a name="line.221"></a>
<span class="sourceLineNo">222</span>     *<a name="line.222"></a>
<span class="sourceLineNo">223</span>     * Useful for passing multiple values to the next (or furthur) tasks.<a name="line.223"></a>
<span class="sourceLineNo">224</span>     *<a name="line.224"></a>
<span class="sourceLineNo">225</span>     * @param key Key to store in Task Data<a name="line.225"></a>
<span class="sourceLineNo">226</span>     * @param val Value to store in Task Data<a name="line.226"></a>
<span class="sourceLineNo">227</span>     * @param &lt;R&gt; Type the Task Data value is expected to be<a name="line.227"></a>
<span class="sourceLineNo">228</span>     */<a name="line.228"></a>
<span class="sourceLineNo">229</span>    @SuppressWarnings("WeakerAccess")<a name="line.229"></a>
<span class="sourceLineNo">230</span>    public &lt;R&gt; R setTaskData(String key, Object val) {<a name="line.230"></a>
<span class="sourceLineNo">231</span>        //noinspection unchecked<a name="line.231"></a>
<span class="sourceLineNo">232</span>        return (R) taskMap.put(key, val);<a name="line.232"></a>
<span class="sourceLineNo">233</span>    }<a name="line.233"></a>
<span class="sourceLineNo">234</span><a name="line.234"></a>
<span class="sourceLineNo">235</span>    /**<a name="line.235"></a>
<span class="sourceLineNo">236</span>     * Removes a saved value on the chain.<a name="line.236"></a>
<span class="sourceLineNo">237</span>     *<a name="line.237"></a>
<span class="sourceLineNo">238</span>     * @param key Key to remove from Task Data<a name="line.238"></a>
<span class="sourceLineNo">239</span>     * @param &lt;R&gt; Type the Task Data value is expected to be<a name="line.239"></a>
<span class="sourceLineNo">240</span>     */<a name="line.240"></a>
<span class="sourceLineNo">241</span>    @SuppressWarnings("WeakerAccess")<a name="line.241"></a>
<span class="sourceLineNo">242</span>    public &lt;R&gt; R removeTaskData(String key) {<a name="line.242"></a>
<span class="sourceLineNo">243</span>        //noinspection unchecked<a name="line.243"></a>
<span class="sourceLineNo">244</span>        return (R) taskMap.remove(key);<a name="line.244"></a>
<span class="sourceLineNo">245</span>    }<a name="line.245"></a>
<span class="sourceLineNo">246</span><a name="line.246"></a>
<span class="sourceLineNo">247</span>    /**<a name="line.247"></a>
<span class="sourceLineNo">248</span>     * Takes the previous tasks return value, stores it to the specified key<a name="line.248"></a>
<span class="sourceLineNo">249</span>     * as Task Data, and then forwards that value to the next task.<a name="line.249"></a>
<span class="sourceLineNo">250</span>     *<a name="line.250"></a>
<span class="sourceLineNo">251</span>     * @param key Key to store the previous return value into Task Data<a name="line.251"></a>
<span class="sourceLineNo">252</span>     */<a name="line.252"></a>
<span class="sourceLineNo">253</span>    @SuppressWarnings("WeakerAccess")<a name="line.253"></a>
<span class="sourceLineNo">254</span>    public TaskChain&lt;T&gt; storeAsData(String key) {<a name="line.254"></a>
<span class="sourceLineNo">255</span>        return current((val) -&gt; {<a name="line.255"></a>
<span class="sourceLineNo">256</span>            setTaskData(key, val);<a name="line.256"></a>
<span class="sourceLineNo">257</span>            return val;<a name="line.257"></a>
<span class="sourceLineNo">258</span>        });<a name="line.258"></a>
<span class="sourceLineNo">259</span>    }<a name="line.259"></a>
<span class="sourceLineNo">260</span><a name="line.260"></a>
<span class="sourceLineNo">261</span>    /**<a name="line.261"></a>
<span class="sourceLineNo">262</span>     * Reads the specified key from Task Data, and passes it to the next task.<a name="line.262"></a>
<span class="sourceLineNo">263</span>     *<a name="line.263"></a>
<span class="sourceLineNo">264</span>     * Will need to pass expected type such as chain.&amp;lt;Foo&amp;gt;returnData("key")<a name="line.264"></a>
<span class="sourceLineNo">265</span>     *<a name="line.265"></a>
<span class="sourceLineNo">266</span>     * @param key Key to retrieve from Task Data and pass to next task<a name="line.266"></a>
<span class="sourceLineNo">267</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.267"></a>
<span class="sourceLineNo">268</span>     */<a name="line.268"></a>
<span class="sourceLineNo">269</span>    @SuppressWarnings("WeakerAccess")<a name="line.269"></a>
<span class="sourceLineNo">270</span>    public &lt;R&gt; TaskChain&lt;R&gt; returnData(String key) {<a name="line.270"></a>
<span class="sourceLineNo">271</span>        //noinspection unchecked<a name="line.271"></a>
<span class="sourceLineNo">272</span>        return currentFirst(() -&gt; (R) getTaskData(key));<a name="line.272"></a>
<span class="sourceLineNo">273</span>    }<a name="line.273"></a>
<span class="sourceLineNo">274</span><a name="line.274"></a>
<span class="sourceLineNo">275</span>    /**<a name="line.275"></a>
<span class="sourceLineNo">276</span>     * Returns the chain itself to the next task.<a name="line.276"></a>
<span class="sourceLineNo">277</span>     */<a name="line.277"></a>
<span class="sourceLineNo">278</span>    @SuppressWarnings("WeakerAccess")<a name="line.278"></a>
<span class="sourceLineNo">279</span>    public TaskChain&lt;TaskChain&lt;?&gt;&gt; returnChain() {<a name="line.279"></a>
<span class="sourceLineNo">280</span>        return currentFirst(() -&gt; this);<a name="line.280"></a>
<span class="sourceLineNo">281</span>    }<a name="line.281"></a>
<span class="sourceLineNo">282</span><a name="line.282"></a>
<span class="sourceLineNo">283</span><a name="line.283"></a>
<span class="sourceLineNo">284</span>    /**<a name="line.284"></a>
<span class="sourceLineNo">285</span>     * IMPLEMENTATION SPECIFIC!!<a name="line.285"></a>
<span class="sourceLineNo">286</span>     * Consult your application implementation to understand how long 1 unit is.<a name="line.286"></a>
<span class="sourceLineNo">287</span>     *<a name="line.287"></a>
<span class="sourceLineNo">288</span>     * For example, in Minecraft it is a tick, which is roughly 50 milliseconds, but not guaranteed.<a name="line.288"></a>
<span class="sourceLineNo">289</span>     *<a name="line.289"></a>
<span class="sourceLineNo">290</span>     * Adds a delay to the chain execution.<a name="line.290"></a>
<span class="sourceLineNo">291</span>     *<a name="line.291"></a>
<span class="sourceLineNo">292</span>     * @param gameUnits # of game units to delay before next task<a name="line.292"></a>
<span class="sourceLineNo">293</span>     */<a name="line.293"></a>
<span class="sourceLineNo">294</span>    @SuppressWarnings("WeakerAccess")<a name="line.294"></a>
<span class="sourceLineNo">295</span>    public TaskChain&lt;T&gt; delay(final int gameUnits) {<a name="line.295"></a>
<span class="sourceLineNo">296</span>        //noinspection CodeBlock2Expr<a name="line.296"></a>
<span class="sourceLineNo">297</span>        return currentCallback((input, next) -&gt; {<a name="line.297"></a>
<span class="sourceLineNo">298</span>            impl.scheduleTask(gameUnits, () -&gt; next.accept(input));<a name="line.298"></a>
<span class="sourceLineNo">299</span>        });<a name="line.299"></a>
<span class="sourceLineNo">300</span>    }<a name="line.300"></a>
<span class="sourceLineNo">301</span><a name="line.301"></a>
<span class="sourceLineNo">302</span>    /**<a name="line.302"></a>
<span class="sourceLineNo">303</span>     * Adds a real time delay to the chain execution.<a name="line.303"></a>
<span class="sourceLineNo">304</span>     * Chain will abort if the delay is interrupted.<a name="line.304"></a>
<span class="sourceLineNo">305</span>     *<a name="line.305"></a>
<span class="sourceLineNo">306</span>     * @param duration duration of the delay before next task<a name="line.306"></a>
<span class="sourceLineNo">307</span>     */<a name="line.307"></a>
<span class="sourceLineNo">308</span>    @SuppressWarnings("WeakerAccess")<a name="line.308"></a>
<span class="sourceLineNo">309</span>    public TaskChain&lt;T&gt; delay(final int duration, TimeUnit unit) {<a name="line.309"></a>
<span class="sourceLineNo">310</span>        //noinspection CodeBlock2Expr<a name="line.310"></a>
<span class="sourceLineNo">311</span>        return currentCallback((input, next) -&gt; {<a name="line.311"></a>
<span class="sourceLineNo">312</span>            impl.scheduleTask(duration, unit, () -&gt; next.accept(input));<a name="line.312"></a>
<span class="sourceLineNo">313</span>        });<a name="line.313"></a>
<span class="sourceLineNo">314</span>    }<a name="line.314"></a>
<span class="sourceLineNo">315</span><a name="line.315"></a>
<span class="sourceLineNo">316</span>    // &lt;/editor-fold&gt;<a name="line.316"></a>
<span class="sourceLineNo">317</span>    // &lt;editor-fold desc="// API Methods - Abort"&gt;<a name="line.317"></a>
<span class="sourceLineNo">318</span><a name="line.318"></a>
<span class="sourceLineNo">319</span>    /**<a name="line.319"></a>
<span class="sourceLineNo">320</span>     * Aborts the chain once this step is reached. This is primarily useful when you are<a name="line.320"></a>
<span class="sourceLineNo">321</span>     * dynamically building the chains steps (such as .configure()) and want to conditionally stop the<a name="line.321"></a>
<span class="sourceLineNo">322</span>     * chain from proceeding.<a name="line.322"></a>
<span class="sourceLineNo">323</span>     *<a name="line.323"></a>
<span class="sourceLineNo">324</span>     * @return Chain<a name="line.324"></a>
<span class="sourceLineNo">325</span>     */<a name="line.325"></a>
<span class="sourceLineNo">326</span>    public TaskChain&lt;?&gt; abortChain() {<a name="line.326"></a>
<span class="sourceLineNo">327</span>        if (executed) {<a name="line.327"></a>
<span class="sourceLineNo">328</span>            TaskChain.abort();<a name="line.328"></a>
<span class="sourceLineNo">329</span>            return this;<a name="line.329"></a>
<span class="sourceLineNo">330</span>        } else {<a name="line.330"></a>
<span class="sourceLineNo">331</span>            return current(TaskChain::abort);<a name="line.331"></a>
<span class="sourceLineNo">332</span>        }<a name="line.332"></a>
<span class="sourceLineNo">333</span>    }<a name="line.333"></a>
<span class="sourceLineNo">334</span><a name="line.334"></a>
<span class="sourceLineNo">335</span>    /**<a name="line.335"></a>
<span class="sourceLineNo">336</span>     * Checks if the previous task return was null.<a name="line.336"></a>
<span class="sourceLineNo">337</span>     *<a name="line.337"></a>
<span class="sourceLineNo">338</span>     * If not null, the previous task return will forward to the next task.<a name="line.338"></a>
<span class="sourceLineNo">339</span>     */<a name="line.339"></a>
<span class="sourceLineNo">340</span>    @SuppressWarnings("WeakerAccess")<a name="line.340"></a>
<span class="sourceLineNo">341</span>    public TaskChain&lt;T&gt; abortIfNull() {<a name="line.341"></a>
<span class="sourceLineNo">342</span>        return abortIfNull(null, null, null, null);<a name="line.342"></a>
<span class="sourceLineNo">343</span>    }<a name="line.343"></a>
<span class="sourceLineNo">344</span><a name="line.344"></a>
<span class="sourceLineNo">345</span>    /**<a name="line.345"></a>
<span class="sourceLineNo">346</span>     * {@link TaskChain#abortIf(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.346"></a>
<span class="sourceLineNo">347</span>     */<a name="line.347"></a>
<span class="sourceLineNo">348</span>    @SuppressWarnings("WeakerAccess")<a name="line.348"></a>
<span class="sourceLineNo">349</span>    public TaskChain&lt;T&gt; abortIfNull(TaskChainAbortAction&lt;?, ?, ?&gt; action) {<a name="line.349"></a>
<span class="sourceLineNo">350</span>        return abortIf(Predicate.isEqual(null), action, null, null, null);<a name="line.350"></a>
<span class="sourceLineNo">351</span>    }<a name="line.351"></a>
<span class="sourceLineNo">352</span><a name="line.352"></a>
<span class="sourceLineNo">353</span>    /**<a name="line.353"></a>
<span class="sourceLineNo">354</span>     * {@link TaskChain#abortIf(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.354"></a>
<span class="sourceLineNo">355</span>     */<a name="line.355"></a>
<span class="sourceLineNo">356</span>    @SuppressWarnings("WeakerAccess")<a name="line.356"></a>
<span class="sourceLineNo">357</span>    public &lt;A1&gt; TaskChain&lt;T&gt; abortIfNull(TaskChainAbortAction&lt;A1, ?, ?&gt; action, A1 arg1) {<a name="line.357"></a>
<span class="sourceLineNo">358</span>        //noinspection unchecked<a name="line.358"></a>
<span class="sourceLineNo">359</span>        return abortIf(Predicate.isEqual(null), action, arg1, null, null);<a name="line.359"></a>
<span class="sourceLineNo">360</span>    }<a name="line.360"></a>
<span class="sourceLineNo">361</span><a name="line.361"></a>
<span class="sourceLineNo">362</span>    /**<a name="line.362"></a>
<span class="sourceLineNo">363</span>     * {@link TaskChain#abortIf(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.363"></a>
<span class="sourceLineNo">364</span>     */<a name="line.364"></a>
<span class="sourceLineNo">365</span>    @SuppressWarnings("WeakerAccess")<a name="line.365"></a>
<span class="sourceLineNo">366</span>    public &lt;A1, A2&gt; TaskChain&lt;T&gt; abortIfNull(TaskChainAbortAction&lt;A1, A2, ?&gt; action, A1 arg1, A2 arg2) {<a name="line.366"></a>
<span class="sourceLineNo">367</span>        //noinspection unchecked<a name="line.367"></a>
<span class="sourceLineNo">368</span>        return abortIf(Predicate.isEqual(null), action, arg1, arg2, null);<a name="line.368"></a>
<span class="sourceLineNo">369</span>    }<a name="line.369"></a>
<span class="sourceLineNo">370</span><a name="line.370"></a>
<span class="sourceLineNo">371</span>    /**<a name="line.371"></a>
<span class="sourceLineNo">372</span>     * Checks if the previous task return was null, and aborts if it was<a name="line.372"></a>
<span class="sourceLineNo">373</span>     * Then executes supplied action handler<a name="line.373"></a>
<span class="sourceLineNo">374</span>     *<a name="line.374"></a>
<span class="sourceLineNo">375</span>     * If not null, the previous task return will forward to the next task.<a name="line.375"></a>
<span class="sourceLineNo">376</span>     */<a name="line.376"></a>
<span class="sourceLineNo">377</span>    @SuppressWarnings("WeakerAccess")<a name="line.377"></a>
<span class="sourceLineNo">378</span>    public &lt;A1, A2, A3&gt; TaskChain&lt;T&gt; abortIfNull(TaskChainAbortAction&lt;A1, A2, A3&gt; action, A1 arg1, A2 arg2, A3 arg3) {<a name="line.378"></a>
<span class="sourceLineNo">379</span>        //noinspection unchecked<a name="line.379"></a>
<span class="sourceLineNo">380</span>        return abortIf(Predicate.isEqual(null), action, arg1, arg2, arg3);<a name="line.380"></a>
<span class="sourceLineNo">381</span>    }<a name="line.381"></a>
<span class="sourceLineNo">382</span><a name="line.382"></a>
<span class="sourceLineNo">383</span>    /**<a name="line.383"></a>
<span class="sourceLineNo">384</span>     * Checks if the previous task return is the supplied value.<a name="line.384"></a>
<span class="sourceLineNo">385</span>     *<a name="line.385"></a>
<span class="sourceLineNo">386</span>     * If not, the previous task return will forward to the next task.<a name="line.386"></a>
<span class="sourceLineNo">387</span>     */<a name="line.387"></a>
<span class="sourceLineNo">388</span>    @SuppressWarnings("WeakerAccess")<a name="line.388"></a>
<span class="sourceLineNo">389</span>    public TaskChain&lt;T&gt; abortIf(T ifObj) {<a name="line.389"></a>
<span class="sourceLineNo">390</span>        return abortIf(ifObj, null, null, null, null);<a name="line.390"></a>
<span class="sourceLineNo">391</span>    }<a name="line.391"></a>
<span class="sourceLineNo">392</span><a name="line.392"></a>
<span class="sourceLineNo">393</span>    /**<a name="line.393"></a>
<span class="sourceLineNo">394</span>     * {@link TaskChain#abortIf(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.394"></a>
<span class="sourceLineNo">395</span>     */<a name="line.395"></a>
<span class="sourceLineNo">396</span>    @SuppressWarnings("WeakerAccess")<a name="line.396"></a>
<span class="sourceLineNo">397</span>    public TaskChain&lt;T&gt; abortIf(T ifObj, TaskChainAbortAction&lt;?, ?, ?&gt; action) {<a name="line.397"></a>
<span class="sourceLineNo">398</span>        return abortIf(ifObj, action, null, null, null);<a name="line.398"></a>
<span class="sourceLineNo">399</span>    }<a name="line.399"></a>
<span class="sourceLineNo">400</span><a name="line.400"></a>
<span class="sourceLineNo">401</span>    /**<a name="line.401"></a>
<span class="sourceLineNo">402</span>     * {@link TaskChain#abortIf(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.402"></a>
<span class="sourceLineNo">403</span>     */<a name="line.403"></a>
<span class="sourceLineNo">404</span>    @SuppressWarnings("WeakerAccess")<a name="line.404"></a>
<span class="sourceLineNo">405</span>    public &lt;A1&gt; TaskChain&lt;T&gt; abortIf(T ifObj, TaskChainAbortAction&lt;A1, ?, ?&gt; action, A1 arg1) {<a name="line.405"></a>
<span class="sourceLineNo">406</span>        return abortIf(ifObj, action, arg1, null, null);<a name="line.406"></a>
<span class="sourceLineNo">407</span>    }<a name="line.407"></a>
<span class="sourceLineNo">408</span><a name="line.408"></a>
<span class="sourceLineNo">409</span>    /**<a name="line.409"></a>
<span class="sourceLineNo">410</span>     * {@link TaskChain#abortIf(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.410"></a>
<span class="sourceLineNo">411</span>     */<a name="line.411"></a>
<span class="sourceLineNo">412</span>    @SuppressWarnings("WeakerAccess")<a name="line.412"></a>
<span class="sourceLineNo">413</span>    public &lt;A1, A2&gt; TaskChain&lt;T&gt; abortIf(T ifObj, TaskChainAbortAction&lt;A1, A2, ?&gt; action, A1 arg1, A2 arg2) {<a name="line.413"></a>
<span class="sourceLineNo">414</span>        return abortIf(ifObj, action, arg1, arg2, null);<a name="line.414"></a>
<span class="sourceLineNo">415</span>    }<a name="line.415"></a>
<span class="sourceLineNo">416</span><a name="line.416"></a>
<span class="sourceLineNo">417</span>    /**<a name="line.417"></a>
<span class="sourceLineNo">418</span>     * {@link TaskChain#abortIf(Predicate, TaskChainAbortAction, Object, Object, Object)}<a name="line.418"></a>
<span class="sourceLineNo">419</span>     */<a name="line.419"></a>
<span class="sourceLineNo">420</span>    @SuppressWarnings("WeakerAccess")<a name="line.420"></a>
<span class="sourceLineNo">421</span>    public &lt;A1, A2, A3&gt; TaskChain&lt;T&gt; abortIf(T ifObj, TaskChainAbortAction&lt;A1, A2, A3&gt; action, A1 arg1, A2 arg2, A3 arg3) {<a name="line.421"></a>
<span class="sourceLineNo">422</span>        return abortIf(Predicate.isEqual(ifObj), action, arg1, arg2, arg3);<a name="line.422"></a>
<span class="sourceLineNo">423</span>    }<a name="line.423"></a>
<span class="sourceLineNo">424</span>    <a name="line.424"></a>
<span class="sourceLineNo">425</span>    /**<a name="line.425"></a>
<span class="sourceLineNo">426</span>     * Checks if the previous task return matches the supplied predicate, and aborts if it was.<a name="line.426"></a>
<span class="sourceLineNo">427</span>     * <a name="line.427"></a>
<span class="sourceLineNo">428</span>     * If predicate does not match, the previous task return will forward to the next task.<a name="line.428"></a>
<span class="sourceLineNo">429</span>     */<a name="line.429"></a>
<span class="sourceLineNo">430</span>    @SuppressWarnings("WeakerAccess")<a name="line.430"></a>
<span class="sourceLineNo">431</span>    public TaskChain&lt;T&gt; abortIf(Predicate&lt;T&gt; predicate) {<a name="line.431"></a>
<span class="sourceLineNo">432</span>        return abortIf(predicate, null, null, null, null);<a name="line.432"></a>
<span class="sourceLineNo">433</span>    }<a name="line.433"></a>
<span class="sourceLineNo">434</span><a name="line.434"></a>
<span class="sourceLineNo">435</span>    /**<a name="line.435"></a>
<span class="sourceLineNo">436</span>     * {@link TaskChain#abortIf(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.436"></a>
<span class="sourceLineNo">437</span>     */<a name="line.437"></a>
<span class="sourceLineNo">438</span>    @SuppressWarnings("WeakerAccess")<a name="line.438"></a>
<span class="sourceLineNo">439</span>    public TaskChain&lt;T&gt; abortIf(Predicate&lt;T&gt; predicate, TaskChainAbortAction&lt;?, ?, ?&gt; action) {<a name="line.439"></a>
<span class="sourceLineNo">440</span>        return abortIf(predicate, action, null, null, null);<a name="line.440"></a>
<span class="sourceLineNo">441</span>    }<a name="line.441"></a>
<span class="sourceLineNo">442</span><a name="line.442"></a>
<span class="sourceLineNo">443</span>    /**<a name="line.443"></a>
<span class="sourceLineNo">444</span>     * {@link TaskChain#abortIf(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.444"></a>
<span class="sourceLineNo">445</span>     */<a name="line.445"></a>
<span class="sourceLineNo">446</span>    @SuppressWarnings("WeakerAccess")<a name="line.446"></a>
<span class="sourceLineNo">447</span>    public &lt;A1&gt; TaskChain&lt;T&gt; abortIf(Predicate&lt;T&gt; predicate, TaskChainAbortAction&lt;A1, ?, ?&gt; action, A1 arg1) {<a name="line.447"></a>
<span class="sourceLineNo">448</span>        return abortIf(predicate, action, arg1, null, null);<a name="line.448"></a>
<span class="sourceLineNo">449</span>    }<a name="line.449"></a>
<span class="sourceLineNo">450</span><a name="line.450"></a>
<span class="sourceLineNo">451</span>    /**<a name="line.451"></a>
<span class="sourceLineNo">452</span>     * {@link TaskChain#abortIf(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.452"></a>
<span class="sourceLineNo">453</span>     */<a name="line.453"></a>
<span class="sourceLineNo">454</span>    @SuppressWarnings("WeakerAccess")<a name="line.454"></a>
<span class="sourceLineNo">455</span>    public &lt;A1, A2&gt; TaskChain&lt;T&gt; abortIf(Predicate&lt;T&gt; predicate, TaskChainAbortAction&lt;A1, A2, ?&gt; action, A1 arg1, A2 arg2) {<a name="line.455"></a>
<span class="sourceLineNo">456</span>        return abortIf(predicate, action, arg1, arg2, null);<a name="line.456"></a>
<span class="sourceLineNo">457</span>    }<a name="line.457"></a>
<span class="sourceLineNo">458</span><a name="line.458"></a>
<span class="sourceLineNo">459</span>    /**<a name="line.459"></a>
<span class="sourceLineNo">460</span>     * Checks if the previous task return matches the supplied predicate, and aborts if it was.<a name="line.460"></a>
<span class="sourceLineNo">461</span>     * Then executes supplied action handler<a name="line.461"></a>
<span class="sourceLineNo">462</span>     * <a name="line.462"></a>
<span class="sourceLineNo">463</span>     * If predicate does not match, the previous task return will forward to the next task.<a name="line.463"></a>
<span class="sourceLineNo">464</span>     */<a name="line.464"></a>
<span class="sourceLineNo">465</span>    public &lt;A1, A2, A3&gt; TaskChain&lt;T&gt; abortIf(Predicate&lt;T&gt; predicate, TaskChainAbortAction&lt;A1, A2, A3&gt; action, A1 arg1, A2 arg2, A3 arg3) {<a name="line.465"></a>
<span class="sourceLineNo">466</span>        return current((obj) -&gt; {<a name="line.466"></a>
<span class="sourceLineNo">467</span>           if (predicate.test(obj)) {<a name="line.467"></a>
<span class="sourceLineNo">468</span>               handleAbortAction(action, arg1, arg2, arg3);<a name="line.468"></a>
<span class="sourceLineNo">469</span>               return null;<a name="line.469"></a>
<span class="sourceLineNo">470</span>           }<a name="line.470"></a>
<span class="sourceLineNo">471</span>           return obj;<a name="line.471"></a>
<span class="sourceLineNo">472</span>        });<a name="line.472"></a>
<span class="sourceLineNo">473</span>    }<a name="line.473"></a>
<span class="sourceLineNo">474</span><a name="line.474"></a>
<span class="sourceLineNo">475</span>    /**<a name="line.475"></a>
<span class="sourceLineNo">476</span>     * {@link TaskChain#abortIfNot(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.476"></a>
<span class="sourceLineNo">477</span>     */<a name="line.477"></a>
<span class="sourceLineNo">478</span>    @SuppressWarnings("WeakerAccess")<a name="line.478"></a>
<span class="sourceLineNo">479</span>    public TaskChain&lt;T&gt; abortIfNot(T ifNotObj) {<a name="line.479"></a>
<span class="sourceLineNo">480</span>        return abortIfNot(ifNotObj, null, null, null, null);<a name="line.480"></a>
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<span class="sourceLineNo">482</span><a name="line.482"></a>
<span class="sourceLineNo">483</span>    /**<a name="line.483"></a>
<span class="sourceLineNo">484</span>     * {@link TaskChain#abortIfNot(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.484"></a>
<span class="sourceLineNo">485</span>     */<a name="line.485"></a>
<span class="sourceLineNo">486</span>    @SuppressWarnings("WeakerAccess")<a name="line.486"></a>
<span class="sourceLineNo">487</span>    public TaskChain&lt;T&gt; abortIfNot(T ifNotObj, TaskChainAbortAction&lt;?, ?, ?&gt; action) {<a name="line.487"></a>
<span class="sourceLineNo">488</span>        return abortIfNot(ifNotObj, action, null, null, null);<a name="line.488"></a>
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<span class="sourceLineNo">490</span><a name="line.490"></a>
<span class="sourceLineNo">491</span>    /**<a name="line.491"></a>
<span class="sourceLineNo">492</span>     * {@link TaskChain#abortIfNot(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.492"></a>
<span class="sourceLineNo">493</span>     */<a name="line.493"></a>
<span class="sourceLineNo">494</span>    @SuppressWarnings("WeakerAccess")<a name="line.494"></a>
<span class="sourceLineNo">495</span>    public &lt;A1&gt; TaskChain&lt;T&gt; abortIfNot(T ifNotObj, TaskChainAbortAction&lt;A1, ?, ?&gt; action, A1 arg1) {<a name="line.495"></a>
<span class="sourceLineNo">496</span>        return abortIfNot(ifNotObj, action, arg1, null, null);<a name="line.496"></a>
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<span class="sourceLineNo">498</span><a name="line.498"></a>
<span class="sourceLineNo">499</span>    /**<a name="line.499"></a>
<span class="sourceLineNo">500</span>     * {@link TaskChain#abortIfNot(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.500"></a>
<span class="sourceLineNo">501</span>     */<a name="line.501"></a>
<span class="sourceLineNo">502</span>    @SuppressWarnings("WeakerAccess")<a name="line.502"></a>
<span class="sourceLineNo">503</span>    public &lt;A1, A2&gt; TaskChain&lt;T&gt; abortIfNot(T ifNotObj, TaskChainAbortAction&lt;A1, A2, ?&gt; action, A1 arg1, A2 arg2) {<a name="line.503"></a>
<span class="sourceLineNo">504</span>        return abortIfNot(ifNotObj, action, arg1, arg2, null);<a name="line.504"></a>
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<span class="sourceLineNo">506</span><a name="line.506"></a>
<span class="sourceLineNo">507</span>    /**<a name="line.507"></a>
<span class="sourceLineNo">508</span>     * {@link TaskChain#abortIfNot(Predicate, TaskChainAbortAction, Object, Object, Object)}<a name="line.508"></a>
<span class="sourceLineNo">509</span>     */<a name="line.509"></a>
<span class="sourceLineNo">510</span>    @SuppressWarnings("WeakerAccess")<a name="line.510"></a>
<span class="sourceLineNo">511</span>    public &lt;A1, A2, A3&gt; TaskChain&lt;T&gt; abortIfNot(T ifNotObj, TaskChainAbortAction&lt;A1, A2, A3&gt; action, A1 arg1, A2 arg2, A3 arg3) {<a name="line.511"></a>
<span class="sourceLineNo">512</span>        return abortIfNot(Predicate.&lt;T&gt;isEqual(ifNotObj), action, arg1, arg2, arg3);<a name="line.512"></a>
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<span class="sourceLineNo">514</span>    <a name="line.514"></a>
<span class="sourceLineNo">515</span>    /**<a name="line.515"></a>
<span class="sourceLineNo">516</span>     * Checks if the previous task return does NOT match the supplied predicate, and aborts if it does not match.<a name="line.516"></a>
<span class="sourceLineNo">517</span>     * <a name="line.517"></a>
<span class="sourceLineNo">518</span>     * If predicate matches, the previous task return will forward to the next task.<a name="line.518"></a>
<span class="sourceLineNo">519</span>     */<a name="line.519"></a>
<span class="sourceLineNo">520</span>    @SuppressWarnings("WeakerAccess")<a name="line.520"></a>
<span class="sourceLineNo">521</span>    public TaskChain&lt;T&gt; abortIfNot(Predicate&lt;T&gt; ifNotPredicate) {<a name="line.521"></a>
<span class="sourceLineNo">522</span>        return abortIfNot(ifNotPredicate, null, null, null, null);<a name="line.522"></a>
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<span class="sourceLineNo">524</span><a name="line.524"></a>
<span class="sourceLineNo">525</span>    /**<a name="line.525"></a>
<span class="sourceLineNo">526</span>     * {@link TaskChain#abortIfNot(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.526"></a>
<span class="sourceLineNo">527</span>     */<a name="line.527"></a>
<span class="sourceLineNo">528</span>    @SuppressWarnings("WeakerAccess")<a name="line.528"></a>
<span class="sourceLineNo">529</span>    public TaskChain&lt;T&gt; abortIfNot(Predicate&lt;T&gt; ifNotPredicate, TaskChainAbortAction&lt;?, ?, ?&gt; action) {<a name="line.529"></a>
<span class="sourceLineNo">530</span>        return abortIfNot(ifNotPredicate, action, null, null, null);<a name="line.530"></a>
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<span class="sourceLineNo">532</span><a name="line.532"></a>
<span class="sourceLineNo">533</span>    /**<a name="line.533"></a>
<span class="sourceLineNo">534</span>     * {@link TaskChain#abortIfNot(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.534"></a>
<span class="sourceLineNo">535</span>     */<a name="line.535"></a>
<span class="sourceLineNo">536</span>    @SuppressWarnings("WeakerAccess")<a name="line.536"></a>
<span class="sourceLineNo">537</span>    public &lt;A1&gt; TaskChain&lt;T&gt; abortIfNot(Predicate&lt;T&gt; ifNotPredicate, TaskChainAbortAction&lt;A1, ?, ?&gt; action, A1 arg1) {<a name="line.537"></a>
<span class="sourceLineNo">538</span>        return abortIfNot(ifNotPredicate, action, arg1, null, null);<a name="line.538"></a>
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<span class="sourceLineNo">540</span><a name="line.540"></a>
<span class="sourceLineNo">541</span>    /**<a name="line.541"></a>
<span class="sourceLineNo">542</span>     * {@link TaskChain#abortIfNot(Object, TaskChainAbortAction, Object, Object, Object)}<a name="line.542"></a>
<span class="sourceLineNo">543</span>     */<a name="line.543"></a>
<span class="sourceLineNo">544</span>    @SuppressWarnings("WeakerAccess")<a name="line.544"></a>
<span class="sourceLineNo">545</span>    public &lt;A1, A2&gt; TaskChain&lt;T&gt; abortIfNot(Predicate&lt;T&gt; ifNotPredicate, TaskChainAbortAction&lt;A1, A2, ?&gt; action, A1 arg1, A2 arg2) {<a name="line.545"></a>
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<span class="sourceLineNo">548</span><a name="line.548"></a>
<span class="sourceLineNo">549</span>    /**<a name="line.549"></a>
<span class="sourceLineNo">550</span>     * Checks if the previous task return does NOT match the supplied predicate, and aborts if it does not match.<a name="line.550"></a>
<span class="sourceLineNo">551</span>     * Then executes supplied action handler<a name="line.551"></a>
<span class="sourceLineNo">552</span>     * <a name="line.552"></a>
<span class="sourceLineNo">553</span>     * If predicate matches, the previous task return will forward to the next task.<a name="line.553"></a>
<span class="sourceLineNo">554</span>     */<a name="line.554"></a>
<span class="sourceLineNo">555</span>    @SuppressWarnings("WeakerAccess")<a name="line.555"></a>
<span class="sourceLineNo">556</span>    public &lt;A1, A2, A3&gt; TaskChain&lt;T&gt; abortIfNot(Predicate&lt;T&gt; ifNotPredicate, TaskChainAbortAction&lt;A1, A2, A3&gt; action, A1 arg1, A2 arg2, A3 arg3) {<a name="line.556"></a>
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<span class="sourceLineNo">559</span><a name="line.559"></a>
<span class="sourceLineNo">560</span>    // &lt;/editor-fold&gt;<a name="line.560"></a>
<span class="sourceLineNo">561</span>    // &lt;editor-fold desc="// API Methods - Async Executing"&gt;<a name="line.561"></a>
<span class="sourceLineNo">562</span>    /* ======================================================================================== */<a name="line.562"></a>
<span class="sourceLineNo">563</span>    // Async Executing Tasks<a name="line.563"></a>
<span class="sourceLineNo">564</span>    /* ======================================================================================== */<a name="line.564"></a>
<span class="sourceLineNo">565</span><a name="line.565"></a>
<span class="sourceLineNo">566</span>    /**<a name="line.566"></a>
<span class="sourceLineNo">567</span>     * Execute a task on the main thread, with no previous input, and a callback to return the response to.<a name="line.567"></a>
<span class="sourceLineNo">568</span>     *<a name="line.568"></a>
<span class="sourceLineNo">569</span>     * It's important you don't perform blocking operations in this method. Only use this if<a name="line.569"></a>
<span class="sourceLineNo">570</span>     * the task will be scheduling a different sync operation outside of the TaskChains scope.<a name="line.570"></a>
<span class="sourceLineNo">571</span>     *<a name="line.571"></a>
<span class="sourceLineNo">572</span>     * Usually you could achieve the same design with a blocking API by switching to an async task<a name="line.572"></a>
<span class="sourceLineNo">573</span>     * for the next task and running it there.<a name="line.573"></a>
<span class="sourceLineNo">574</span>     *<a name="line.574"></a>
<span class="sourceLineNo">575</span>     * This method would primarily be for cases where you need to use an API that ONLY provides<a name="line.575"></a>
<span class="sourceLineNo">576</span>     * a callback style API.<a name="line.576"></a>
<span class="sourceLineNo">577</span>     *<a name="line.577"></a>
<span class="sourceLineNo">578</span>     * @param task The task to execute<a name="line.578"></a>
<span class="sourceLineNo">579</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.579"></a>
<span class="sourceLineNo">580</span>     */<a name="line.580"></a>
<span class="sourceLineNo">581</span>    @SuppressWarnings("WeakerAccess")<a name="line.581"></a>
<span class="sourceLineNo">582</span>    public &lt;R&gt; TaskChain&lt;R&gt; syncFirstCallback(AsyncExecutingFirstTask&lt;R&gt; task) {<a name="line.582"></a>
<span class="sourceLineNo">583</span>        //noinspection unchecked<a name="line.583"></a>
<span class="sourceLineNo">584</span>        return add0(new TaskHolder&lt;&gt;(this, false, task));<a name="line.584"></a>
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<span class="sourceLineNo">586</span><a name="line.586"></a>
<span class="sourceLineNo">587</span>    /**<a name="line.587"></a>
<span class="sourceLineNo">588</span>     * {@link TaskChain#syncFirstCallback(AsyncExecutingFirstTask)} but ran off main thread<a name="line.588"></a>
<span class="sourceLineNo">589</span>     * @param task The task to execute<a name="line.589"></a>
<span class="sourceLineNo">590</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.590"></a>
<span class="sourceLineNo">591</span>     */<a name="line.591"></a>
<span class="sourceLineNo">592</span>    @SuppressWarnings("WeakerAccess")<a name="line.592"></a>
<span class="sourceLineNo">593</span>    public &lt;R&gt; TaskChain&lt;R&gt; asyncFirstCallback(AsyncExecutingFirstTask&lt;R&gt; task) {<a name="line.593"></a>
<span class="sourceLineNo">594</span>        //noinspection unchecked<a name="line.594"></a>
<span class="sourceLineNo">595</span>        return add0(new TaskHolder&lt;&gt;(this, true, task));<a name="line.595"></a>
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<span class="sourceLineNo">597</span><a name="line.597"></a>
<span class="sourceLineNo">598</span>    /**<a name="line.598"></a>
<span class="sourceLineNo">599</span>     * {@link TaskChain#syncFirstCallback(AsyncExecutingFirstTask)} but ran on current thread the Chain was created on<a name="line.599"></a>
<span class="sourceLineNo">600</span>     * @param task The task to execute<a name="line.600"></a>
<span class="sourceLineNo">601</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.601"></a>
<span class="sourceLineNo">602</span>     */<a name="line.602"></a>
<span class="sourceLineNo">603</span>    @SuppressWarnings("WeakerAccess")<a name="line.603"></a>
<span class="sourceLineNo">604</span>    public &lt;R&gt; TaskChain&lt;R&gt; currentFirstCallback(AsyncExecutingFirstTask&lt;R&gt; task) {<a name="line.604"></a>
<span class="sourceLineNo">605</span>        //noinspection unchecked<a name="line.605"></a>
<span class="sourceLineNo">606</span>        return add0(new TaskHolder&lt;&gt;(this, null, task));<a name="line.606"></a>
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<span class="sourceLineNo">608</span><a name="line.608"></a>
<span class="sourceLineNo">609</span>    /**<a name="line.609"></a>
<span class="sourceLineNo">610</span>     * Execute a task on the main thread, with the last output, and a callback to return the response to.<a name="line.610"></a>
<span class="sourceLineNo">611</span>     *<a name="line.611"></a>
<span class="sourceLineNo">612</span>     * It's important you don't perform blocking operations in this method. Only use this if<a name="line.612"></a>
<span class="sourceLineNo">613</span>     * the task will be scheduling a different sync operation outside of the TaskChains scope.<a name="line.613"></a>
<span class="sourceLineNo">614</span>     *<a name="line.614"></a>
<span class="sourceLineNo">615</span>     * Usually you could achieve the same design with a blocking API by switching to an async task<a name="line.615"></a>
<span class="sourceLineNo">616</span>     * for the next task and running it there.<a name="line.616"></a>
<span class="sourceLineNo">617</span>     *<a name="line.617"></a>
<span class="sourceLineNo">618</span>     * This method would primarily be for cases where you need to use an API that ONLY provides<a name="line.618"></a>
<span class="sourceLineNo">619</span>     * a callback style API.<a name="line.619"></a>
<span class="sourceLineNo">620</span>     *<a name="line.620"></a>
<span class="sourceLineNo">621</span>     * @param task The task to execute<a name="line.621"></a>
<span class="sourceLineNo">622</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.622"></a>
<span class="sourceLineNo">623</span>     */<a name="line.623"></a>
<span class="sourceLineNo">624</span>    @SuppressWarnings("WeakerAccess")<a name="line.624"></a>
<span class="sourceLineNo">625</span>    public &lt;R&gt; TaskChain&lt;R&gt; syncCallback(AsyncExecutingTask&lt;R, T&gt; task) {<a name="line.625"></a>
<span class="sourceLineNo">626</span>        //noinspection unchecked<a name="line.626"></a>
<span class="sourceLineNo">627</span>        return add0(new TaskHolder&lt;&gt;(this, false, task));<a name="line.627"></a>
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<span class="sourceLineNo">629</span><a name="line.629"></a>
<span class="sourceLineNo">630</span>    /**<a name="line.630"></a>
<span class="sourceLineNo">631</span>     * {@link TaskChain#syncCallback(AsyncExecutingTask)}, ran on main thread but no input or output<a name="line.631"></a>
<span class="sourceLineNo">632</span>     * @param task The task to execute<a name="line.632"></a>
<span class="sourceLineNo">633</span>     */<a name="line.633"></a>
<span class="sourceLineNo">634</span>    @SuppressWarnings("WeakerAccess")<a name="line.634"></a>
<span class="sourceLineNo">635</span>    public TaskChain&lt;?&gt; syncCallback(AsyncExecutingGenericTask task) {<a name="line.635"></a>
<span class="sourceLineNo">636</span>        return add0(new TaskHolder&lt;&gt;(this, false, task));<a name="line.636"></a>
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<span class="sourceLineNo">638</span><a name="line.638"></a>
<span class="sourceLineNo">639</span>    /**<a name="line.639"></a>
<span class="sourceLineNo">640</span>     * {@link TaskChain#syncCallback(AsyncExecutingTask)} but ran off main thread<a name="line.640"></a>
<span class="sourceLineNo">641</span>     * @param task The task to execute<a name="line.641"></a>
<span class="sourceLineNo">642</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.642"></a>
<span class="sourceLineNo">643</span>     */<a name="line.643"></a>
<span class="sourceLineNo">644</span>    @SuppressWarnings("WeakerAccess")<a name="line.644"></a>
<span class="sourceLineNo">645</span>    public &lt;R&gt; TaskChain&lt;R&gt; asyncCallback(AsyncExecutingTask&lt;R, T&gt; task) {<a name="line.645"></a>
<span class="sourceLineNo">646</span>        //noinspection unchecked<a name="line.646"></a>
<span class="sourceLineNo">647</span>        return add0(new TaskHolder&lt;&gt;(this, true, task));<a name="line.647"></a>
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<span class="sourceLineNo">649</span><a name="line.649"></a>
<span class="sourceLineNo">650</span>    /**<a name="line.650"></a>
<span class="sourceLineNo">651</span>     * {@link TaskChain#syncCallback(AsyncExecutingTask)} but ran off main thread<a name="line.651"></a>
<span class="sourceLineNo">652</span>     * @param task The task to execute<a name="line.652"></a>
<span class="sourceLineNo">653</span>     */<a name="line.653"></a>
<span class="sourceLineNo">654</span>    @SuppressWarnings("WeakerAccess")<a name="line.654"></a>
<span class="sourceLineNo">655</span>    public TaskChain&lt;?&gt; asyncCallback(AsyncExecutingGenericTask task) {<a name="line.655"></a>
<span class="sourceLineNo">656</span>        return add0(new TaskHolder&lt;&gt;(this, true, task));<a name="line.656"></a>
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<span class="sourceLineNo">658</span><a name="line.658"></a>
<span class="sourceLineNo">659</span>    /**<a name="line.659"></a>
<span class="sourceLineNo">660</span>     * {@link TaskChain#syncCallback(AsyncExecutingTask)} but ran on current thread the Chain was created on<a name="line.660"></a>
<span class="sourceLineNo">661</span>     * @param task The task to execute<a name="line.661"></a>
<span class="sourceLineNo">662</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.662"></a>
<span class="sourceLineNo">663</span>     */<a name="line.663"></a>
<span class="sourceLineNo">664</span>    @SuppressWarnings("WeakerAccess")<a name="line.664"></a>
<span class="sourceLineNo">665</span>    public &lt;R&gt; TaskChain&lt;R&gt; currentCallback(AsyncExecutingTask&lt;R, T&gt; task) {<a name="line.665"></a>
<span class="sourceLineNo">666</span>        //noinspection unchecked<a name="line.666"></a>
<span class="sourceLineNo">667</span>        return add0(new TaskHolder&lt;&gt;(this, null, task));<a name="line.667"></a>
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<span class="sourceLineNo">669</span><a name="line.669"></a>
<span class="sourceLineNo">670</span>    /**<a name="line.670"></a>
<span class="sourceLineNo">671</span>     * {@link TaskChain#syncCallback(AsyncExecutingTask)} but ran on current thread the Chain was created on<a name="line.671"></a>
<span class="sourceLineNo">672</span>     * @param task The task to execute<a name="line.672"></a>
<span class="sourceLineNo">673</span>     */<a name="line.673"></a>
<span class="sourceLineNo">674</span>    @SuppressWarnings("WeakerAccess")<a name="line.674"></a>
<span class="sourceLineNo">675</span>    public TaskChain&lt;?&gt; currentCallback(AsyncExecutingGenericTask task) {<a name="line.675"></a>
<span class="sourceLineNo">676</span>        return add0(new TaskHolder&lt;&gt;(this, null, task));<a name="line.676"></a>
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<span class="sourceLineNo">678</span><a name="line.678"></a>
<span class="sourceLineNo">679</span>    // &lt;/editor-fold&gt;<a name="line.679"></a>
<span class="sourceLineNo">680</span>    // &lt;editor-fold desc="// API Methods - Future"&gt;<a name="line.680"></a>
<span class="sourceLineNo">681</span>    /* ======================================================================================== */<a name="line.681"></a>
<span class="sourceLineNo">682</span>    // Future Tasks<a name="line.682"></a>
<span class="sourceLineNo">683</span>    /* ======================================================================================== */<a name="line.683"></a>
<span class="sourceLineNo">684</span><a name="line.684"></a>
<span class="sourceLineNo">685</span>    /**<a name="line.685"></a>
<span class="sourceLineNo">686</span>     * Takes a supplied Future, and holds processing of the chain until the future completes.<a name="line.686"></a>
<span class="sourceLineNo">687</span>     * The value of the Future will be passed until the next task.<a name="line.687"></a>
<span class="sourceLineNo">688</span>     *<a name="line.688"></a>
<span class="sourceLineNo">689</span>     * @param future The Future to wait until it is complete on<a name="line.689"></a>
<span class="sourceLineNo">690</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.690"></a>
<span class="sourceLineNo">691</span>     */<a name="line.691"></a>
<span class="sourceLineNo">692</span>    @SuppressWarnings("WeakerAccess")<a name="line.692"></a>
<span class="sourceLineNo">693</span>    public &lt;R&gt; TaskChain&lt;R&gt; future(CompletableFuture&lt;R&gt; future) {<a name="line.693"></a>
<span class="sourceLineNo">694</span>        return currentFuture((input) -&gt; future);<a name="line.694"></a>
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<span class="sourceLineNo">696</span><a name="line.696"></a>
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<span class="sourceLineNo">698</span>     * Takes multiple supplied Futures, and holds processing of the chain until the futures completes.<a name="line.698"></a>
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<span class="sourceLineNo">760</span>     *<a name="line.760"></a>
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<span class="sourceLineNo">801</span>     * of the chain until all of the futures completes.<a name="line.801"></a>
<span class="sourceLineNo">802</span>     *<a name="line.802"></a>
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<span class="sourceLineNo">805</span>     *<a name="line.805"></a>
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<span class="sourceLineNo">818</span>     * the task will be scheduling a different async operation outside of the TaskChains scope.<a name="line.818"></a>
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<span class="sourceLineNo">855</span>     *<a name="line.855"></a>
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<span class="sourceLineNo">879</span>     * @param task The task to execute<a name="line.879"></a>
<span class="sourceLineNo">880</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.880"></a>
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<span class="sourceLineNo">882</span>    @SuppressWarnings("WeakerAccess")<a name="line.882"></a>
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<span class="sourceLineNo">892</span>    @SuppressWarnings("WeakerAccess")<a name="line.892"></a>
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<span class="sourceLineNo">897</span>    /**<a name="line.897"></a>
<span class="sourceLineNo">898</span>     * {@link TaskChain#syncFuture(FutureTask)} but the future provider is ran on current thread the Chain was created on<a name="line.898"></a>
<span class="sourceLineNo">899</span>     * @param task The task to execute<a name="line.899"></a>
<span class="sourceLineNo">900</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.900"></a>
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<span class="sourceLineNo">902</span>    @SuppressWarnings("WeakerAccess")<a name="line.902"></a>
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<span class="sourceLineNo">908</span>    /**<a name="line.908"></a>
<span class="sourceLineNo">909</span>     * {@link TaskChain#syncFuture(FutureTask)} but the future provider is ran on current thread the Chain was created on<a name="line.909"></a>
<span class="sourceLineNo">910</span>     * @param task The task to execute<a name="line.910"></a>
<span class="sourceLineNo">911</span>     */<a name="line.911"></a>
<span class="sourceLineNo">912</span>    @SuppressWarnings("WeakerAccess")<a name="line.912"></a>
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<span class="sourceLineNo">917</span>    // &lt;/editor-fold&gt;<a name="line.917"></a>
<span class="sourceLineNo">918</span>    // &lt;editor-fold desc="// API Methods - Normal"&gt;<a name="line.918"></a>
<span class="sourceLineNo">919</span>    /* ======================================================================================== */<a name="line.919"></a>
<span class="sourceLineNo">920</span>    // Normal Tasks<a name="line.920"></a>
<span class="sourceLineNo">921</span>    /* ======================================================================================== */<a name="line.921"></a>
<span class="sourceLineNo">922</span><a name="line.922"></a>
<span class="sourceLineNo">923</span>    /**<a name="line.923"></a>
<span class="sourceLineNo">924</span>     * Execute task on main thread, with no input, returning an output<a name="line.924"></a>
<span class="sourceLineNo">925</span>     * @param task The task to execute<a name="line.925"></a>
<span class="sourceLineNo">926</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.926"></a>
<span class="sourceLineNo">927</span>     */<a name="line.927"></a>
<span class="sourceLineNo">928</span>    @SuppressWarnings("WeakerAccess")<a name="line.928"></a>
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<span class="sourceLineNo">930</span>        //noinspection unchecked<a name="line.930"></a>
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<span class="sourceLineNo">933</span><a name="line.933"></a>
<span class="sourceLineNo">934</span>    /**<a name="line.934"></a>
<span class="sourceLineNo">935</span>     * {@link TaskChain#syncFirst(FirstTask)} but ran off main thread<a name="line.935"></a>
<span class="sourceLineNo">936</span>     * @param task The task to execute<a name="line.936"></a>
<span class="sourceLineNo">937</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.937"></a>
<span class="sourceLineNo">938</span>     */<a name="line.938"></a>
<span class="sourceLineNo">939</span>    @SuppressWarnings("WeakerAccess")<a name="line.939"></a>
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<span class="sourceLineNo">941</span>        //noinspection unchecked<a name="line.941"></a>
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<span class="sourceLineNo">945</span>    /**<a name="line.945"></a>
<span class="sourceLineNo">946</span>     * {@link TaskChain#syncFirst(FirstTask)} but ran on current thread the Chain was created on<a name="line.946"></a>
<span class="sourceLineNo">947</span>     * @param task The task to execute<a name="line.947"></a>
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<span class="sourceLineNo">952</span>        //noinspection unchecked<a name="line.952"></a>
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<span class="sourceLineNo">956</span>    /**<a name="line.956"></a>
<span class="sourceLineNo">957</span>     * Execute task on main thread, with the last returned input, returning an output<a name="line.957"></a>
<span class="sourceLineNo">958</span>     * @param task The task to execute<a name="line.958"></a>
<span class="sourceLineNo">959</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.959"></a>
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<span class="sourceLineNo">961</span>    @SuppressWarnings("WeakerAccess")<a name="line.961"></a>
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<span class="sourceLineNo">967</span>    /**<a name="line.967"></a>
<span class="sourceLineNo">968</span>     * Execute task on main thread, with no input or output<a name="line.968"></a>
<span class="sourceLineNo">969</span>     * @param task The task to execute<a name="line.969"></a>
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<span class="sourceLineNo">976</span>    /**<a name="line.976"></a>
<span class="sourceLineNo">977</span>     * {@link TaskChain#sync(Task)} but ran off main thread<a name="line.977"></a>
<span class="sourceLineNo">978</span>     * @param task The task to execute<a name="line.978"></a>
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<span class="sourceLineNo">987</span>    /**<a name="line.987"></a>
<span class="sourceLineNo">988</span>     * {@link TaskChain#sync(GenericTask)} but ran off main thread<a name="line.988"></a>
<span class="sourceLineNo">989</span>     * @param task The task to execute<a name="line.989"></a>
<span class="sourceLineNo">990</span>     */<a name="line.990"></a>
<span class="sourceLineNo">991</span>    @SuppressWarnings("WeakerAccess")<a name="line.991"></a>
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<span class="sourceLineNo">995</span><a name="line.995"></a>
<span class="sourceLineNo">996</span>    /**<a name="line.996"></a>
<span class="sourceLineNo">997</span>     * {@link TaskChain#sync(Task)} but ran on current thread the Chain was created on<a name="line.997"></a>
<span class="sourceLineNo">998</span>     * @param task The task to execute<a name="line.998"></a>
<span class="sourceLineNo">999</span>     * @param &lt;R&gt; Return type that the next parameter can expect as argument type<a name="line.999"></a>
<span class="sourceLineNo">1000</span>     */<a name="line.1000"></a>
<span class="sourceLineNo">1001</span>    @SuppressWarnings("WeakerAccess")<a name="line.1001"></a>
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<span class="sourceLineNo">1003</span>        //noinspection unchecked<a name="line.1003"></a>
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<span class="sourceLineNo">1007</span>    /**<a name="line.1007"></a>
<span class="sourceLineNo">1008</span>     * {@link TaskChain#sync(GenericTask)} but ran on current thread the Chain was created on<a name="line.1008"></a>
<span class="sourceLineNo">1009</span>     * @param task The task to execute<a name="line.1009"></a>
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<span class="sourceLineNo">1018</span>     * Execute task on main thread, with the last output, and no furthur output<a name="line.1018"></a>
<span class="sourceLineNo">1019</span>     * @param task The task to execute<a name="line.1019"></a>
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<span class="sourceLineNo">1021</span>    @SuppressWarnings("WeakerAccess")<a name="line.1021"></a>
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<span class="sourceLineNo">1026</span>    /**<a name="line.1026"></a>
<span class="sourceLineNo">1027</span>     * {@link TaskChain#syncLast(LastTask)} but ran off main thread<a name="line.1027"></a>
<span class="sourceLineNo">1028</span>     * @param task The task to execute<a name="line.1028"></a>
<span class="sourceLineNo">1029</span>     */<a name="line.1029"></a>
<span class="sourceLineNo">1030</span>    @SuppressWarnings("WeakerAccess")<a name="line.1030"></a>
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<span class="sourceLineNo">1034</span><a name="line.1034"></a>
<span class="sourceLineNo">1035</span>    /**<a name="line.1035"></a>
<span class="sourceLineNo">1036</span>     * {@link TaskChain#syncLast(LastTask)} but ran on current thread the Chain was created on<a name="line.1036"></a>
<span class="sourceLineNo">1037</span>     * @param task The task to execute<a name="line.1037"></a>
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<span class="sourceLineNo">1039</span>    @SuppressWarnings("WeakerAccess")<a name="line.1039"></a>
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<span class="sourceLineNo">1044</span>    /**<a name="line.1044"></a>
<span class="sourceLineNo">1045</span>     * Finished adding tasks, begins executing them.<a name="line.1045"></a>
<span class="sourceLineNo">1046</span>     */<a name="line.1046"></a>
<span class="sourceLineNo">1047</span>    @SuppressWarnings("WeakerAccess")<a name="line.1047"></a>
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<span class="sourceLineNo">1052</span>    /**<a name="line.1052"></a>
<span class="sourceLineNo">1053</span>     * Finished adding tasks, begins executing them with a done notifier<a name="line.1053"></a>
<span class="sourceLineNo">1054</span>     * @param done The Callback to handle when the chain has finished completion. Argument to consumer contains finish state<a name="line.1054"></a>
<span class="sourceLineNo">1055</span>     */<a name="line.1055"></a>
<span class="sourceLineNo">1056</span>    @SuppressWarnings("WeakerAccess")<a name="line.1056"></a>
<span class="sourceLineNo">1057</span>    public void execute(Runnable done) {<a name="line.1057"></a>
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<span class="sourceLineNo">1061</span>    /**<a name="line.1061"></a>
<span class="sourceLineNo">1062</span>     * Finished adding tasks, begins executing them with a done notifier and error handler<a name="line.1062"></a>
<span class="sourceLineNo">1063</span>     * @param done The Callback to handle when the chain has finished completion. Argument to consumer contains finish state<a name="line.1063"></a>
<span class="sourceLineNo">1064</span>     * @param errorHandler The Error handler to handle exceptions<a name="line.1064"></a>
<span class="sourceLineNo">1065</span>     */<a name="line.1065"></a>
<span class="sourceLineNo">1066</span>    @SuppressWarnings("WeakerAccess")<a name="line.1066"></a>
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<span class="sourceLineNo">1071</span>    /**<a name="line.1071"></a>
<span class="sourceLineNo">1072</span>     * Finished adding tasks, with a done notifier<a name="line.1072"></a>
<span class="sourceLineNo">1073</span>     * @param done The Callback to handle when the chain has finished completion. Argument to consumer contains finish state<a name="line.1073"></a>
<span class="sourceLineNo">1074</span>     */<a name="line.1074"></a>
<span class="sourceLineNo">1075</span>    @SuppressWarnings("WeakerAccess")<a name="line.1075"></a>
<span class="sourceLineNo">1076</span>    public void execute(Consumer&lt;Boolean&gt; done) {<a name="line.1076"></a>
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<span class="sourceLineNo">1080</span>    /**<a name="line.1080"></a>
<span class="sourceLineNo">1081</span>     * Finished adding tasks, begins executing them, with an error handler<a name="line.1081"></a>
<span class="sourceLineNo">1082</span>     * @param errorHandler The Error handler to handle exceptions<a name="line.1082"></a>
<span class="sourceLineNo">1083</span>     */<a name="line.1083"></a>
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<span class="sourceLineNo">1088</span>    /**<a name="line.1088"></a>
<span class="sourceLineNo">1089</span>     * Finished adding tasks, begins executing them with a done notifier and error handler<a name="line.1089"></a>
<span class="sourceLineNo">1090</span>     * @param done The Callback to handle when the chain has finished completion. Argument to consumer contains finish state<a name="line.1090"></a>
<span class="sourceLineNo">1091</span>     * @param errorHandler The Error handler to handle exceptions<a name="line.1091"></a>
<span class="sourceLineNo">1092</span>     */<a name="line.1092"></a>
<span class="sourceLineNo">1093</span>    public void execute(Consumer&lt;Boolean&gt; done, BiConsumer&lt;Exception, Task&lt;?, ?&gt;&gt; errorHandler) {<a name="line.1093"></a>
<span class="sourceLineNo">1094</span>        if (errorHandler == null) {<a name="line.1094"></a>
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<span class="sourceLineNo">1097</span>        this.doneCallback = done;<a name="line.1097"></a>
<span class="sourceLineNo">1098</span>        this.errorHandler = errorHandler;<a name="line.1098"></a>
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<span class="sourceLineNo">1102</span>    // &lt;/editor-fold&gt;<a name="line.1102"></a>
<span class="sourceLineNo">1103</span>    /* ======================================================================================== */<a name="line.1103"></a>
<span class="sourceLineNo">1104</span>    // &lt;editor-fold desc="// Implementation Details"&gt;<a name="line.1104"></a>
<span class="sourceLineNo">1105</span>    private &lt;A1, A2, A3&gt; void handleAbortAction(TaskChainAbortAction&lt;A1, A2, A3&gt; action, A1 arg1, A2 arg2, A3 arg3) {<a name="line.1105"></a>
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<span class="sourceLineNo">1113</span>                TaskChainUtil.logError("Current Action Index was: " + currentActionIndex);<a name="line.1113"></a>
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<span class="sourceLineNo">1138</span>                currentChain.set(this);<a name="line.1138"></a>
<span class="sourceLineNo">1139</span>                this.doneCallback.accept(finished);<a name="line.1139"></a>
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<span class="sourceLineNo">1141</span>                this.handleError(e, null);<a name="line.1141"></a>
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<span class="sourceLineNo">1155</span><a name="line.1155"></a>
<span class="sourceLineNo">1156</span>        this.chainQueue.add(task);<a name="line.1156"></a>
<span class="sourceLineNo">1157</span>        return this;<a name="line.1157"></a>
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<span class="sourceLineNo">1160</span>    /**<a name="line.1160"></a>
<span class="sourceLineNo">1161</span>     * Fires off the next task, and switches between Async/Sync as necessary.<a name="line.1161"></a>
<span class="sourceLineNo">1162</span>     */<a name="line.1162"></a>
<span class="sourceLineNo">1163</span>    private void nextTask() {<a name="line.1163"></a>
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<span class="sourceLineNo">1165</span>            this.currentHolder = this.chainQueue.poll();<a name="line.1165"></a>
<span class="sourceLineNo">1166</span>            if (this.currentHolder == null) {<a name="line.1166"></a>
<span class="sourceLineNo">1167</span>                this.done = true; // to ensure its done while synchronized<a name="line.1167"></a>
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<span class="sourceLineNo">1169</span>        }<a name="line.1169"></a>
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<span class="sourceLineNo">1172</span>            this.previous = null;<a name="line.1172"></a>
<span class="sourceLineNo">1173</span>            // All Done!<a name="line.1173"></a>
<span class="sourceLineNo">1174</span>            this.done(true);<a name="line.1174"></a>
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<span class="sourceLineNo">1181</span>        } else if (isNextAsync) {<a name="line.1181"></a>
<span class="sourceLineNo">1182</span>            if (this.async) {<a name="line.1182"></a>
<span class="sourceLineNo">1183</span>                this.currentHolder.run();<a name="line.1183"></a>
<span class="sourceLineNo">1184</span>            } else {<a name="line.1184"></a>
<span class="sourceLineNo">1185</span>                impl.postAsync(() -&gt; {<a name="line.1185"></a>
<span class="sourceLineNo">1186</span>                    this.async = true;<a name="line.1186"></a>
<span class="sourceLineNo">1187</span>                    this.currentHolder.run();<a name="line.1187"></a>
<span class="sourceLineNo">1188</span>                });<a name="line.1188"></a>
<span class="sourceLineNo">1189</span>            }<a name="line.1189"></a>
<span class="sourceLineNo">1190</span>        } else {<a name="line.1190"></a>
<span class="sourceLineNo">1191</span>            if (this.async) {<a name="line.1191"></a>
<span class="sourceLineNo">1192</span>                impl.postToMain(() -&gt; {<a name="line.1192"></a>
<span class="sourceLineNo">1193</span>                    this.async = false;<a name="line.1193"></a>
<span class="sourceLineNo">1194</span>                    this.currentHolder.run();<a name="line.1194"></a>
<span class="sourceLineNo">1195</span>                });<a name="line.1195"></a>
<span class="sourceLineNo">1196</span>            } else {<a name="line.1196"></a>
<span class="sourceLineNo">1197</span>                this.currentHolder.run();<a name="line.1197"></a>
<span class="sourceLineNo">1198</span>            }<a name="line.1198"></a>
<span class="sourceLineNo">1199</span>        }<a name="line.1199"></a>
<span class="sourceLineNo">1200</span>    }<a name="line.1200"></a>
<span class="sourceLineNo">1201</span><a name="line.1201"></a>
<span class="sourceLineNo">1202</span>    private void handleError(Throwable throwable, Task&lt;?, ?&gt; task) {<a name="line.1202"></a>
<span class="sourceLineNo">1203</span>        Exception e = throwable instanceof Exception ? (Exception) throwable : new Exception(throwable);<a name="line.1203"></a>
<span class="sourceLineNo">1204</span>        if (errorHandler != null) {<a name="line.1204"></a>
<span class="sourceLineNo">1205</span>            final TaskChain&lt;?&gt; prev = currentChain.get();<a name="line.1205"></a>
<span class="sourceLineNo">1206</span>            try {<a name="line.1206"></a>
<span class="sourceLineNo">1207</span>                currentChain.set(this);<a name="line.1207"></a>
<span class="sourceLineNo">1208</span>                errorHandler.accept(e, task);<a name="line.1208"></a>
<span class="sourceLineNo">1209</span>            } catch (Exception e2) {<a name="line.1209"></a>
<span class="sourceLineNo">1210</span>                TaskChainUtil.logError("TaskChain Exception in the error handler!" + e2.getMessage());<a name="line.1210"></a>
<span class="sourceLineNo">1211</span>                TaskChainUtil.logError("Current Action Index was: " + currentActionIndex);<a name="line.1211"></a>
<span class="sourceLineNo">1212</span>                e.printStackTrace();<a name="line.1212"></a>
<span class="sourceLineNo">1213</span>            } finally {<a name="line.1213"></a>
<span class="sourceLineNo">1214</span>                currentChain.set(prev);<a name="line.1214"></a>
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<span class="sourceLineNo">1216</span>        } else {<a name="line.1216"></a>
<span class="sourceLineNo">1217</span>            TaskChainUtil.logError("TaskChain Exception on " + (task != null ? task.getClass().getName() : "Done Hander") + ": " + e.getMessage());<a name="line.1217"></a>
<span class="sourceLineNo">1218</span>            TaskChainUtil.logError("Current Action Index was: " + currentActionIndex);<a name="line.1218"></a>
<span class="sourceLineNo">1219</span>            e.printStackTrace();<a name="line.1219"></a>
<span class="sourceLineNo">1220</span>        }<a name="line.1220"></a>
<span class="sourceLineNo">1221</span>    }<a name="line.1221"></a>
<span class="sourceLineNo">1222</span><a name="line.1222"></a>
<span class="sourceLineNo">1223</span>    private void abortExecutingChain() {<a name="line.1223"></a>
<span class="sourceLineNo">1224</span>        this.previous = null;<a name="line.1224"></a>
<span class="sourceLineNo">1225</span>        this.chainQueue.clear();<a name="line.1225"></a>
<span class="sourceLineNo">1226</span>        this.done(false);<a name="line.1226"></a>
<span class="sourceLineNo">1227</span>    }<a name="line.1227"></a>
<span class="sourceLineNo">1228</span><a name="line.1228"></a>
<span class="sourceLineNo">1229</span>    private &lt;R&gt; CompletableFuture&lt;List&lt;R&gt;&gt; getFuture(List&lt;CompletableFuture&lt;R&gt;&gt; futures) {<a name="line.1229"></a>
<span class="sourceLineNo">1230</span>        CompletableFuture&lt;List&lt;R&gt;&gt; onDone = new CompletableFuture&lt;&gt;();<a name="line.1230"></a>
<span class="sourceLineNo">1231</span>        CompletableFuture&lt;?&gt;[] futureArray = new CompletableFuture&lt;?&gt;[futures.size()];<a name="line.1231"></a>
<span class="sourceLineNo">1232</span>        CompletableFuture.allOf((CompletableFuture&lt;?&gt;[]) futures.toArray(futureArray)).whenComplete((aVoid, throwable) -&gt; {<a name="line.1232"></a>
<span class="sourceLineNo">1233</span>            if (throwable != null) {<a name="line.1233"></a>
<span class="sourceLineNo">1234</span>                onDone.completeExceptionally(throwable);<a name="line.1234"></a>
<span class="sourceLineNo">1235</span>            } else {<a name="line.1235"></a>
<span class="sourceLineNo">1236</span>                boolean[] error = {false};<a name="line.1236"></a>
<span class="sourceLineNo">1237</span>                final List&lt;R&gt; results = futures.stream().map(f -&gt; {<a name="line.1237"></a>
<span class="sourceLineNo">1238</span>                    try {<a name="line.1238"></a>
<span class="sourceLineNo">1239</span>                        return f.join();<a name="line.1239"></a>
<span class="sourceLineNo">1240</span>                    } catch (Exception e) {<a name="line.1240"></a>
<span class="sourceLineNo">1241</span>                        error[0] = true;<a name="line.1241"></a>
<span class="sourceLineNo">1242</span>                        TaskChain.this.handleError(e, TaskChain.this.currentHolder.task);<a name="line.1242"></a>
<span class="sourceLineNo">1243</span>                        return null;<a name="line.1243"></a>
<span class="sourceLineNo">1244</span>                    }<a name="line.1244"></a>
<span class="sourceLineNo">1245</span>                }).collect(Collectors.toList());<a name="line.1245"></a>
<span class="sourceLineNo">1246</span>                if (error[0]) {<a name="line.1246"></a>
<span class="sourceLineNo">1247</span>                    onDone.completeExceptionally(new Exception("Future Dependant had an exception"));<a name="line.1247"></a>
<span class="sourceLineNo">1248</span>                } else {<a name="line.1248"></a>
<span class="sourceLineNo">1249</span>                    onDone.complete(results);<a name="line.1249"></a>
<span class="sourceLineNo">1250</span>                }<a name="line.1250"></a>
<span class="sourceLineNo">1251</span>            }<a name="line.1251"></a>
<span class="sourceLineNo">1252</span>        });<a name="line.1252"></a>
<span class="sourceLineNo">1253</span>        return onDone;<a name="line.1253"></a>
<span class="sourceLineNo">1254</span>    }<a name="line.1254"></a>
<span class="sourceLineNo">1255</span><a name="line.1255"></a>
<span class="sourceLineNo">1256</span>    // &lt;/editor-fold&gt;<a name="line.1256"></a>
<span class="sourceLineNo">1257</span>    /* ======================================================================================== */<a name="line.1257"></a>
<span class="sourceLineNo">1258</span>    // &lt;editor-fold desc="// TaskHolder"&gt;<a name="line.1258"></a>
<span class="sourceLineNo">1259</span>    /**<a name="line.1259"></a>
<span class="sourceLineNo">1260</span>     * Provides foundation of a task with what the previous task type should return<a name="line.1260"></a>
<span class="sourceLineNo">1261</span>     * to pass to this and what this task will return.<a name="line.1261"></a>
<span class="sourceLineNo">1262</span>     * @param &lt;R&gt; Return Type<a name="line.1262"></a>
<span class="sourceLineNo">1263</span>     * @param &lt;A&gt; Argument Type Expected<a name="line.1263"></a>
<span class="sourceLineNo">1264</span>     */<a name="line.1264"></a>
<span class="sourceLineNo">1265</span>    @SuppressWarnings("AccessingNonPublicFieldOfAnotherObject")<a name="line.1265"></a>
<span class="sourceLineNo">1266</span>    private class TaskHolder&lt;R, A&gt; {<a name="line.1266"></a>
<span class="sourceLineNo">1267</span>        private final TaskChain&lt;?&gt; chain;<a name="line.1267"></a>
<span class="sourceLineNo">1268</span>        private final Task&lt;R, A&gt; task;<a name="line.1268"></a>
<span class="sourceLineNo">1269</span>        final Boolean async;<a name="line.1269"></a>
<span class="sourceLineNo">1270</span><a name="line.1270"></a>
<span class="sourceLineNo">1271</span>        private boolean executed = false;<a name="line.1271"></a>
<span class="sourceLineNo">1272</span>        private boolean aborted = false;<a name="line.1272"></a>
<span class="sourceLineNo">1273</span>        private final int actionIndex;<a name="line.1273"></a>
<span class="sourceLineNo">1274</span><a name="line.1274"></a>
<span class="sourceLineNo">1275</span>        private TaskHolder(TaskChain&lt;?&gt; chain, Boolean async, Task&lt;R, A&gt; task) {<a name="line.1275"></a>
<span class="sourceLineNo">1276</span>            this.actionIndex = TaskChain.this.actionIndex++;<a name="line.1276"></a>
<span class="sourceLineNo">1277</span>            this.task = task;<a name="line.1277"></a>
<span class="sourceLineNo">1278</span>            this.chain = chain;<a name="line.1278"></a>
<span class="sourceLineNo">1279</span>            this.async = async;<a name="line.1279"></a>
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<span class="sourceLineNo">1281</span><a name="line.1281"></a>
<span class="sourceLineNo">1282</span>        /**<a name="line.1282"></a>
<span class="sourceLineNo">1283</span>         * Called internally by Task Chain to facilitate executing the task and then the next task.<a name="line.1283"></a>
<span class="sourceLineNo">1284</span>         */<a name="line.1284"></a>
<span class="sourceLineNo">1285</span>        private void run() {<a name="line.1285"></a>
<span class="sourceLineNo">1286</span>            final Object arg = this.chain.previous;<a name="line.1286"></a>
<span class="sourceLineNo">1287</span>            this.chain.previous = null;<a name="line.1287"></a>
<span class="sourceLineNo">1288</span>            TaskChain.this.currentActionIndex = this.actionIndex;<a name="line.1288"></a>
<span class="sourceLineNo">1289</span>            final R res;<a name="line.1289"></a>
<span class="sourceLineNo">1290</span>            final TaskChain&lt;?&gt; prevChain = currentChain.get();<a name="line.1290"></a>
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<span class="sourceLineNo">1292</span>                currentChain.set(this.chain);<a name="line.1292"></a>
<span class="sourceLineNo">1293</span>                if (this.task instanceof FutureTask) {<a name="line.1293"></a>
<span class="sourceLineNo">1294</span>                    //noinspection unchecked<a name="line.1294"></a>
<span class="sourceLineNo">1295</span>                    final CompletableFuture&lt;R&gt; future = ((FutureTask&lt;R, A&gt;) this.task).runFuture((A) arg);<a name="line.1295"></a>
<span class="sourceLineNo">1296</span>                    if (future == null) {<a name="line.1296"></a>
<span class="sourceLineNo">1297</span>                        throw new NullPointerException("Must return a Future");<a name="line.1297"></a>
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<span class="sourceLineNo">1301</span>                            this.chain.handleError(throwable, this.task);<a name="line.1301"></a>
<span class="sourceLineNo">1302</span>                            this.abort();<a name="line.1302"></a>
<span class="sourceLineNo">1303</span>                        } else {<a name="line.1303"></a>
<span class="sourceLineNo">1304</span>                            this.next(r);<a name="line.1304"></a>
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<span class="sourceLineNo">1306</span>                    });<a name="line.1306"></a>
<span class="sourceLineNo">1307</span>                } else if (this.task instanceof AsyncExecutingTask) {<a name="line.1307"></a>
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<span class="sourceLineNo">1309</span>                    ((AsyncExecutingTask&lt;R, A&gt;) this.task).runAsync((A) arg, this::next);<a name="line.1309"></a>
<span class="sourceLineNo">1310</span>                } else {<a name="line.1310"></a>
<span class="sourceLineNo">1311</span>                    //noinspection unchecked<a name="line.1311"></a>
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<span class="sourceLineNo">1313</span>                }<a name="line.1313"></a>
<span class="sourceLineNo">1314</span>            } catch (Throwable e) {<a name="line.1314"></a>
<span class="sourceLineNo">1315</span>                //noinspection ConstantConditions<a name="line.1315"></a>
<span class="sourceLineNo">1316</span>                if (e instanceof AbortChainException) {<a name="line.1316"></a>
<span class="sourceLineNo">1317</span>                    this.abort();<a name="line.1317"></a>
<span class="sourceLineNo">1318</span>                    return;<a name="line.1318"></a>
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<span class="sourceLineNo">1320</span>                this.chain.handleError(e, this.task);<a name="line.1320"></a>
<span class="sourceLineNo">1321</span>                this.abort();<a name="line.1321"></a>
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<span class="sourceLineNo">1323</span>                if (prevChain != null) {<a name="line.1323"></a>
<span class="sourceLineNo">1324</span>                    currentChain.set(prevChain);<a name="line.1324"></a>
<span class="sourceLineNo">1325</span>                } else {<a name="line.1325"></a>
<span class="sourceLineNo">1326</span>                    currentChain.remove();<a name="line.1326"></a>
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<span class="sourceLineNo">1328</span>            }<a name="line.1328"></a>
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<span class="sourceLineNo">1330</span><a name="line.1330"></a>
<span class="sourceLineNo">1331</span>        /**<a name="line.1331"></a>
<span class="sourceLineNo">1332</span>         * Abort the chain, and clear tasks for GC.<a name="line.1332"></a>
<span class="sourceLineNo">1333</span>         */<a name="line.1333"></a>
<span class="sourceLineNo">1334</span>        private synchronized void abort() {<a name="line.1334"></a>
<span class="sourceLineNo">1335</span>            this.aborted = true;<a name="line.1335"></a>
<span class="sourceLineNo">1336</span>            this.chain.abortExecutingChain();<a name="line.1336"></a>
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<span class="sourceLineNo">1338</span><a name="line.1338"></a>
<span class="sourceLineNo">1339</span>        /**<a name="line.1339"></a>
<span class="sourceLineNo">1340</span>         * Accepts result of previous task and executes the next<a name="line.1340"></a>
<span class="sourceLineNo">1341</span>         */<a name="line.1341"></a>
<span class="sourceLineNo">1342</span>        private void next(Object resp) {<a name="line.1342"></a>
<span class="sourceLineNo">1343</span>            synchronized (this) {<a name="line.1343"></a>
<span class="sourceLineNo">1344</span>                if (this.aborted) {<a name="line.1344"></a>
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<span class="sourceLineNo">1346</span>                    return;<a name="line.1346"></a>
<span class="sourceLineNo">1347</span>                }<a name="line.1347"></a>
<span class="sourceLineNo">1348</span>                if (this.executed) {<a name="line.1348"></a>
<span class="sourceLineNo">1349</span>                    this.chain.done(false);<a name="line.1349"></a>
<span class="sourceLineNo">1350</span>                    throw new RuntimeException("This task has already been executed.");<a name="line.1350"></a>
<span class="sourceLineNo">1351</span>                }<a name="line.1351"></a>
<span class="sourceLineNo">1352</span>                this.executed = true;<a name="line.1352"></a>
<span class="sourceLineNo">1353</span>            }<a name="line.1353"></a>
<span class="sourceLineNo">1354</span><a name="line.1354"></a>
<span class="sourceLineNo">1355</span>            this.chain.async = !TaskChain.this.impl.isMainThread(); // We don't know where the task called this from.<a name="line.1355"></a>
<span class="sourceLineNo">1356</span>            this.chain.previous = resp;<a name="line.1356"></a>
<span class="sourceLineNo">1357</span>            this.chain.nextTask();<a name="line.1357"></a>
<span class="sourceLineNo">1358</span>        }<a name="line.1358"></a>
<span class="sourceLineNo">1359</span>    }<a name="line.1359"></a>
<span class="sourceLineNo">1360</span>    // &lt;/editor-fold&gt;<a name="line.1360"></a>
<span class="sourceLineNo">1361</span>}<a name="line.1361"></a>




























































</pre>
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